Cold shut or open link



(No Model.)

7 A. SANFORD.

GOLD SHUT 0R OPEN LINK.

No. 387,110. Patented July 31, 1888.

VVjtt ness es. 1722/ ew/tor.

N. PETERS, Phok Lilhogmphon wamn mn, D. Q

NITED STATES PATENT Trice.

ALBERT SANFORD, OF OSHKOSH, "WISCONSIN.

COLD SHUT OR OPEN LINK.

SPECIFICATION forming part of Letters Patent No. 387,110, dated July 31,1888.

Application tiled January 14, 18st}. Serial No. 260,758. (No model.)

To all whom it may concern:

Be it known that I, ALBERT SANFORD, of Oshkosh,in the county ofI/Vinnebago and State of Wisconsin, have invented certain new and usefulImprovements in Cold Shut or Open Links; and I do hereby declare thefollowing to be a full, clear, and exact description of the same,reference being had to the accompanying drawings, forming apart of thisspecification, and to the figures and letters of reference markedthereon.

This invention has reference to that class of separable links such asare employed for uniting links orsections of chain, forming swivels,eyes, 850.; and itconsists in the novel and improved construction andformation ofsuch link, whereby a strong but relatively light link isproduced, which can readily be inserted and securely fastened in place,all as hereinafter more fully described, and pointed out in the claims.

In the accompanying drawings, Figure l is a view in perspective of myimproved link or blank previous to closing. Fig. 2 is a side viewshowing the link closed. Fig. 3 represents the cross-bar or pin inlongitudinal and transverse sections. Fig. 4 represents the bow of thelink. Fig. 5 is a transverse section through the bow.

Similarlettcrs of reference in the several figures indicate the sameparts.

My improved link, constructed of malleable metal, preferably iron orsteel, is forged, cast, or otherwise formed in substantially theshapeshown that is to say, with a bow, A, of U or other desired form, one endor leg provided with an eye, B, while the other carriesa trans versecross bar or pin, 0, rigidly attached at one end to one leg of the bowA, the opposite end, 0, standing in line with theopening in eye 13, butseparated therefrom a sufficient distance to permit the passage of alink, ring, or other device to which the link is to be attached. Thelink is of thekind known as cold shut that is to say, one which is bentor forced together or into final form and secured while cold. To effectthis operation, the arms of the bow A are forced together until the end0 of the pin 0 is passed into and through the eye B, when the end isspread or riveted outside the contracted orifice in eye B. This orificemay be of any desired form, the end of the m pintle being properlyfitted thereto.

The bow or pin, or both, are made hollow to render the link lighter, andin order to preserve thestrength of the parts and the integrity of thewearingfaees, as well as to facilitate their manufacture, the blanks forthelinks are formed with the bow and pin open on the back or outerfaces, asillust-rated in Figs. 3 and 5. The opening or recess in theback of the bow terminates at or below the eye B on one side andthejunetion of the pintle and bow on the other, while the groove orrecess in the back of the pin extends from one leg to a point at or nearthe inner face of the eye B when the link is closed, leaving the end 0of the pintle, as well as the angle or junction of pin and bow, solid.The recess in the pin is preferably formed with inclined or beveled ends0, as shown in Fig. 3, to strengthen and stiffen the pin at the pointsof connection with the bow. These inclines 0 also assist in sustainingthe pin during the riveting operation, the link being then held with thebase of the pin resting upon an anvil, while the end 0 of the pin isspread or riveted down by blows of a hammer. To facilitate the rivetingoperation, the face of the end 0 of the pin is countersunk, so that itcan be more readily spread while cold.

The blank with the grooved bow and pin is finished by forcing the twowalls or sides of the recess together until their edges meet, therebyforming a completed link with tubular or hollow pin and bow, the centralportions of those parts designed to receive the greatest amount ofpressure or strain being re-enforced, and thereby prevented fromcollapsing or yielding by the two meeting edges of the side walls, whichlatter form a fin or ridge projecting from the outer face and in theplane of the link.

Having thus described my invention,what I claim as new is 1. In a linksuch as described, the combina tion of a hollow bow, a pin or crossbarsecured to one leg, and an eye formed on the othcrleg and adapted toreceive the end ofsaid pin,substantially as described.

2. In a link such as described, the combination,with the bow providedwith an eye on one leg,ofacross-bar or hollow pin rigidly attached tothe opposite leg and adapted to enter the eye and beseeured therein,substantially as described. r

3. The improved link herein described,consisting, essentially, of thebow recessed in the back or outer face with'the sides of the recessbrought together, one leg of said loop provided with an eye and theother with a pin or crossbar adapted to enter said eye, substantially asdescribed.

4. The improved link herein described,provided with a hollow bow andstrengtheningrib formed by the meeting edges of its recessed back orouter face, and carrying on one leg an eye and on the other leg a hollowcross-bar or pin adapted to enter said eye, substantially as described.

5. In a link such as described, the combination of the hollow bow andits strengtheningrib, the hollow cross-bar or pin united to the solidend of one leg, and the solid eye formed on the opposite leg and in linewith the end of said cross-bar or pin,substantially as described.

6. In a link such as described, the combination,with the bow providedwith an eye onone leg, of the cross-bar or pin formed integral with theopposite leg and provided with arecess in its back or outer face,terminating at each end in inclined walls or shoulders, the edges of thesides of said recess abutting together to form a strengthening-rib,substantially as described.

7. The improved cold-shut link herein described, consisting,essentially, of a bow recessed on its outer face, the edges of the wallsof the said recess abutting together to form a strengthening-rib, an eyeformed on one leg of said bow, a cross-bar or pin united to the solidend of the opposite leg, said cross-piece being recessed on its outerface and provided with a strengtheningrib formed by the abutting edgesof the recess, while the end of the crossbar which is adapted to enterthe eye is countersunk, as and for the purpose set forth,

ALBE RT SANFORD.

\Vitnesses:

O. R. NEVITT, Jr., FRANK BELL.

